Submission #228909

#	Time	Username	Problem	Language	Result	Execution time	Memory
228909		blacktulip	Mean (info1cup19_mean)	C++17	0 / 100	5 ms	384 KiB

mean

#include <bits/stdc++.h>

using namespace std;

typedef long long lo;
typedef pair< lo,lo > PII;

#define fi first
#define se second
#define int long long
#define mp make_pair
#define pb push_back
#define fio() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define FOR for(int i=1;i<=n;i++)
#define mid ((start+end)/2)
#define ort ((bas+son)/2)

const lo MAX = -1000000000000000000;
const lo MIN = 1000000000000000000;
const lo inf = 1000000000000000000;
const lo KOK = 100000;
const lo LOG = 30;
const lo li = 200005;
const lo mod = 1000000007;

int n,m,b[li],a[li],k,flag,t,tree[li*4],tree1[li*4];
int cev;
string s;
vector<int> v;

inline void build(int node,int start,int end){
	if(start>end)return ;
	if(start==end){tree[node]=a[start]*(a[start]%2==0?-1:1);return ;}
	build(node*2,start,mid),build(node*2+1,mid+1,end);
	tree[node]=max(tree[node*2],tree[node*2+1]);
}

inline void build1(int node,int start,int end){
	if(start>end)return ;
	if(start==end){tree1[node]=(a[start]%2==0?a[start]:inf);return ;}
	build1(node*2,start,mid),build1(node*2+1,mid+1,end);
	tree1[node]=min(tree1[node*2],tree1[node*2+1]);
}

inline int query(int node,int start,int end,int l,int r){
	if(start>end || start>r || end<l)return -inf;
	if(start>=l && end<=r){return tree[node];}
	return max(query(node*2,start,mid,l,r),query(node*2+1,mid+1,end,l,r));
}

inline int query1(int node,int start,int end,int l,int r){
	if(start>end || start>r || end<l)return inf;
	if(start>=l && end<=r){return tree1[node];}
	return min(query1(node*2,start,mid,l,r),query1(node*2+1,mid+1,end,l,r));
}

main(void){
	//~ freopen("simple.txt","r",stdin);
	//~ printf("**\n");
	scanf("%lld",&n);
	FOR{
		scanf("%lld",&a[i]);
	}
	scanf("%lld",&t);
	build(1,1,n);
	build1(1,1,n);
	while(t--){
		int type,x,y;
		scanf("%lld %lld %lld",&type,&x,&y);
		//~ if(type==0){printf("()\n");return 0;}
		if(type==1){
			int say=query1(1,1,n,x,y);
			int say1=query(1,1,n,x,y);
			if(abs(say)%2==1 || say==-inf || say<0)say=-1;
			if(abs(say1)%2==0 || say1==-inf || say1<0)say1=-1;
			printf("%lld %lld\n",say,say1);
		}
		return 0;
	}
	return 0;
}

Compilation message (stderr)

mean.cpp:57:10: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(void){
          ^
mean.cpp: In function 'int main()':
mean.cpp:60:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld",&n);
  ~~~~~^~~~~~~~~~~
mean.cpp:62:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld",&a[i]);
   ~~~~~^~~~~~~~~~~~~~
mean.cpp:64:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld",&t);
  ~~~~~^~~~~~~~~~~
mean.cpp:69:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld %lld %lld",&type,&x,&y);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 30
• Subtask 2: 0 / 70